Yarn-winding apparatus.



P. LAUBLI.

4 YARN WINDING APPARATUS.

- APPLICATION FILED NOV. 23, 1906. 91 3,739.

. Patented Mar. 2, 1909.

UNITED STATES PATENT @FFIQF PAUL LliUBLI, OF ZOFINGEN, SWITZERLAND,ASSIGNOR TO PAUL RUDOLPH VOIGT, OF OHEMNITZ, GERMANY.

YARN-WINDING APPARATUS.

Application filed November 23, 1906.

T 0 all whom it may concern:

Be it known that I, PAUL LAUBLI, citizen of the Swiss Republic, residingat Zofingen, Switzerland, have invented certain new and usefulImprovements in Yarn-Winding A paratus, of which the following is aspecincation.

This invention relates to yarn-winding ap aratus.

n machines for winding yarn, conical rollers have been arranged adjacentthe lower, conical parts of spools or cops in course of formation,thread-guides being suitably reciprocated to lay the thread upon thesaid conical parts, so that the increasing thicle ness of thethread-layers gradually-lifts the spools at a rate proportional to theincreasing size of the latter.

The present invention also involves the use of a roller against whichthe lower part of the s 001 or cop abuts, so that the latter is gradua ylifted during the course of the winding process, but the constructionand action of the said roller are so modified, that the ordinarythread-guide is dispensed with, the function of guiding the thread beingperformed by the roller itself. For this urpose a conical part of thelatter is provided with an eccentric annular groove which returns uponitself and into which the thread is laid, so that the thread iscrosswound in a manner depending on the shape of the groove.

The construction of the apparatus varies in detail according to thepartlcular purpose for which it is designed.

The invention is illustrated in the annexed drawing by means of a deviceas applied to the winding of weft-cops, but with suitable modificationsit can also be applied to variable cross-winding with self-actors, towinding large bobbins, and to other similar purposes.

In the drawing Figure 1 is a side-view, partly in section and Fig. 2 aplan-view of the apparatus. Figs. 3 to 6 are side-views illustratingdifferent stages of the winding process.

The spindle a is revolved in the usual manner by means of friction-gear,change-wheels, a strap or cord and pulley, or similar well knownmechanism not illustrated. On the spindle is placed the empty spool Z)or tube of pressed paper. For winding coarse cotton or linen yarn it isdesirable to use ribbed Specification of Letters Patent.

Patented March 2, 1909.

Serial No. 34%,764.

spools, but for softer, supple yarns, smooth spools are suitable. Thetruncated, conical cup or roller c, which constitutes the essentialfeature of the invention, may be constructed of wood, glass, cast-ironor other suitable material, and is provided with an elongated hub-part(Z, by means of which it is loosely mounted on an axle c, the latterbeing fixed to a holder f rotatable and adjustable on an axle g. Thegeometrical axis of the axle g is tangential to the spindle a, so thatby adjusting the angle of inclination of the axle e the cup or roller 0can be adjusted to coact with spools of all degrees of conicity.

In the outer, conical surface of the roller c is formed the eccentricguide-groove i already referred to, the said groove being in the exampleillustrated substantially heart-shaped, as shown in Figs. 3 to 6.

The action of the apparatus described will be readily understood byreference to Figs. 3 to 6, showing successive positions of the thread7c. The position of contact between the cup 0 and the spool remainsunchanged during the winding operation, but the thread 7c engaged by theguide-groove i is during this operation displaced in accordance with thechanging position of the latter.

To prevent access of the lubricating oil to the thread, the hub-part dhas no orifice at the end adjacent the cup, as is shown in Fig. 1; theouter surface of the cup is, therefore, continuous. The facility withwhich the cup is revolved is such that slight differences in thedimensions of the spools used are immaterial, such dii'lerences beingneutralized after a few revolutions of the cup. i'Vhen the spindle a isstarted rotation is immediately imparted to the cup 0, and the threadis, is reci rocated by reason of its engage ment wit1 the groove 1', andis therefore cross-wound on the coil m. The friction to which the threadis subjected when passing on to the spool is negligible, the groove ibeing comparatively wide, and the thread is wound in curved lines,without making angles such as occur with some systems of winding. Thefriction between the revolving on c and the cop or spool m is so slightthat tie most sensitive and delicate yarn can be wound without injury,whereas with ordinary cones, such as have hitherto been used, breakagesare frequent. Even with very slight yarn-tension and yarn of poorquality, the winding is very firm, and this is of course of greatadvantage in cops and bobbins used for weaving purposes. It the cup 0has a few millimeters pl :7 cops of diilerent thicknesses can be wound,but for simplicity and cheapness it is preferable that the cup should bestationary and merely rotatable about its axis, as shown in the drawing,and even under these conditions diilerences of from 2 to 3 millimetersin the cop-diameter ii the diil'erence is greater are possible. than say3 millimeters, all that is required is to use a thicker or thinnerspool. It has been found that there is no risl: whatever of the threadslipping out of the groove, provided that the cup is adjusted withmoderate accuracy.

The simplicity of the invention allows of applying it, at small cost, toexisting windingmachines, the out-put of which is doubled or trebled bythis means. A very considerable reduction of working expenses rcsultsfrom the fact that only the spindle need be driven.

Having now fully described my invention I declare that what I claimis 1. In a yarn-winding apparatus the combination of a rotated spool, arevoluble roller driven by said spool and arranged adjacent thereto andan eccentric groove provided in the outer circumference of said rolleradapted to engage a thread and pass it on to said spool the rotativeaxis of the roller being an gularly disposed with respect to that of thespool.

In a yarn-winding apparatus the combination of a rotated shaft, a spoolf xed thereto, a roller driven by said spool and adapted to contact saidspool, a groove in said roller adapted to engage a thread and pass it onsaid spool the rotative axis of the roller being angularly disposed withrespect to that of the spool.

3. In a yarn-winding apparatus the combination of a rotated shaft, aspooli'ixed thereto, a roller driven by said spool and arranged adjacentthereto and means for passing a thread engaging said roller to saidspool the rotative axis of the roller being angularly disposed withrespect to that of the spool.

4. In a yarn-winding apparatus the combination of a rotated spool, atruncated conical roller driven by said spool and adapted to abut said.spool and cross-wind a thread engaging its outer circumference on saidspool the rot ative axis of the roller being angularly disposed withrespect to that of the spool.

5. In a yarn-winding apparatus the combination of a rotated spool, atruncated conical roller driven by said spool and adapted to contactsaid spool, an eccentric groove returning upon itself provided in theouter circumference of said roller adapted to engage a thread and windit on said spool the rotative axis of the roller being angularlydisposed with respect to that or-the spool.

6. in a yarn-winding apparatus the combination of a rotated spool, atruncated conical roller driven by said spool and adapted to contactsaid spool, a heart shaped grooveproided in the outer circumference ofsaid roller adapted to engage a thread and pass it up and down saidspool the rotative axis of the roller being angularly disposed withrespect to that of the spool.

7. In a yarn-winding apparatus the combi nation oi a driven spindle, aspool fixed thereto, an axle, a truncated conical cup arranged looselythereon adapted to contact and be driven by said spool by its outercircumference, the rotative axis of said cup being angularly disposedwith respect tothat of the spool, a cam groove provided in said outercircumference of said cup adaptedto engage a thread and pass thelatterto said spool thereby reciprocating it thereon.

In testimony whereof I afllx my signature in presence of two Witnesses.

PAUL LAUBLI.

Witnesses AUG. SonEN'rz, FRANZ BASLER.

